The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Feb. 21, 2017
Filed:
May. 26, 2011
Ruediger Schmidt, Paderborn, DE;
Alexander Panchenko, Ludwigshafen, DE;
Bastian Ewald, Ludwigshafen, DE;
Philip Hanefeld, Cranford, NJ (US);
Sorin Ivanovici, Heidelberg, DE;
Helmut Moehwald, Annweiler, DE;
Igor P. Kovalev, Vail, AZ (US);
Ruediger Schmidt, Paderborn, DE;
Alexander Panchenko, Ludwigshafen, DE;
Bastian Ewald, Ludwigshafen, DE;
Philip Hanefeld, Cranford, NJ (US);
Sorin Ivanovici, Heidelberg, DE;
Helmut Moehwald, Annweiler, DE;
Igor P. Kovalev, Vail, AZ (US);
Sion Power Corporation, Tucson, AZ (US);
Abstract
The present invention relates to a solid composite for use in the cathode of a lithium-sulphur electric current producing cell wherein the solid composite comprises 1 to 75 wt.-% of expanded graphite, 25 to 99 wt.-% of sulphur, 0 to 50 wt.-% of one or more further conductive agents other than expanded graphite, and 0 to 50 wt.-% one or more binder, based on the total amount of the solid composite, a lithium-sulphur electric current producing cell comprising (i) a cathode comprising the solid composite, (ii) an anode and (iii) an electrolyte interposed between said cathode and said anode, and a process for preparing the solid composite comprising the steps (I) preparing a slurry comprising sulphur, expanded graphite, and optionally further components in a liquid medium by dispersing the sulphur, the expanded graphite, and optionally the further components in the liquid medium; (II) casting the slurry provided in step (I) on a substrate or placing the slurry provided in step (I) into a mold; and (III) removing some or all of the liquid medium from the slurry cast in step (II) to form a solid composite.